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Erschienen in:
2015 | OriginalPaper | Buchkapitel
Analysis of Reaction Network Systems Using Tropical Geometry
verfasst von : Satya Swarup Samal, Dima Grigoriev, Holger Fröhlich, Ovidiu Radulescu
Erschienen in: Computer Algebra in Scientific Computing
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We discuss a novel analysis method for reaction network systems with polynomial or rational rate functions. This method is based on computing tropical equilibrations defined by the equality of at least two dominant monomials of opposite signs in the differential equations of each dynamic variable. In algebraic geometry, the tropical equilibration problem is tantamount to finding tropical prevarieties, that are finite intersections of tropical hypersurfaces. Tropical equilibrations with the same set of dominant monomials define a branch or equivalence class. Minimal branches are particularly interesting as they describe the simplest states of the reaction network. We provide a method to compute the number of minimal branches and to find representative tropical equilibrations for each branch.